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| author | Graeme Russ <graeme.russ@gmail.com> | 2010-04-24 00:05:41 +1000 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-05-06 00:14:44 +0200 |
| commit | 759598f82f02cc84614450807cb5de43ca18a339 (patch) | |
| tree | b3ce9e346595ea56be31107aba0848238f31a00e /arch/i386/cpu/start.S | |
| parent | 4dba333b3c7b34073b0439cc942877f98403632c (diff) | |
| download | bootable_bootloader_goldelico_gta04-759598f82f02cc84614450807cb5de43ca18a339.zip bootable_bootloader_goldelico_gta04-759598f82f02cc84614450807cb5de43ca18a339.tar.gz bootable_bootloader_goldelico_gta04-759598f82f02cc84614450807cb5de43ca18a339.tar.bz2 | |
x86: Split sc520 memory sizing versus reporting
This patch allows the low-level assembler boot-strap to obtain the RAM
size without calling the destructive 'sizer' routine. This allows
boot-strapping from a U-Boot image loaded in RAM
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
Diffstat (limited to 'arch/i386/cpu/start.S')
| -rw-r--r-- | arch/i386/cpu/start.S | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/i386/cpu/start.S b/arch/i386/cpu/start.S index 25d32e6..1980f1a 100644 --- a/arch/i386/cpu/start.S +++ b/arch/i386/cpu/start.S @@ -63,6 +63,11 @@ early_board_init_ret: jmp mem_init mem_init_ret: + /* fetch memory size (into %eax) */ + mov $get_mem_size_ret, %ebp + jmp get_mem_size +get_mem_size_ret: + /* Check we have enough memory for stack */ movl $CONFIG_SYS_STACK_SIZE, %ecx cmpl %ecx, %eax |